{"product_id":"walker-21577-exhaust-muffler","title":"Walker 21577 Exhaust Muffler","description":"\u003ch2\u003eWalker Quiet-Flow SS Muffler for OE-Style Exhaust Fit\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS muffler Part Number 21577 is a specific-fit exhaust muffler built for direct replacement applications on select Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Avalanche, Chevrolet Suburban 1500, and GMC Yukon XL 1500 models. It combines stainless-steel construction with an OE-style sound profile and precision fitment for a clean exhaust repair.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpecific-fit exhaust muffler for select domestic truck and SUV applications\u003c\/li\u003e\n\u003cli\u003e100% stainless-steel body construction for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eOval muffler shape with a combination muffler design\u003c\/li\u003e\n\u003cli\u003e3-inch inlet with offset inlet configuration\u003c\/li\u003e\n\u003cli\u003e2.75-inch outlet with offset outlet configuration\u003c\/li\u003e\n\u003cli\u003eOverall length: 29 inches; body length: 24 inches; body width: 9 inches; body height: 7 inches\u003c\/li\u003e\n\u003cli\u003eWalker Quiet-Flow SS line focuses on OE-style sound and precise fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS 21577 is engineered as a direct replacement muffler for exhaust service on 2007-2013 Chevrolet Silverado 1500 and GMC Sierra 1500, plus select 2007 Chevrolet Avalanche, Chevrolet Suburban 1500, and GMC Yukon XL 1500 applications. The stainless-steel body supports long-term durability, while the offset inlet and outlet layout helps match factory-style exhaust routing. This part cross-references part number 2539 for the same application.\u003c\/p\u003e\u003cp\u003eThe Quiet-Flow SS product line is Walker’s stainless-steel muffler family for drivers who want a replacement that follows OE-style sound characteristics and fitment. For shoppers searching for a Walker Quiet-Flow SS muffler 21577, this part is built around the dimensions and connection style needed for the listed truck and SUV platforms.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRust or corrosion in the original muffler body\u003c\/li\u003e\n\u003cli\u003eExhaust noise caused by a damaged or leaking muffler\u003c\/li\u003e\n\u003cli\u003ePoor fitment from a previous replacement part\u003c\/li\u003e\n\u003cli\u003eFactory exhaust tone changes after muffler wear\u003c\/li\u003e\n\u003cli\u003eExhaust service needs on Silverado 1500, Sierra 1500, and related GM applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify inlet and outlet diameter, offset configuration, and overall length against the vehicle’s exhaust layout before installation. If the vehicle uses a welded exhaust assembly, replace all required related parts during service to maintain proper alignment and sealing. Confirm the specific year, make, and model match before ordering Walker 21577.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Quiet-Flow SS mufflers are built with stainless-steel construction and are positioned as OE-style replacement components for broad domestic and import coverage. This part is listed with limited lifetime warranty coverage for the confirmed applications shown in the fitment data.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits 2007-2013 Chevrolet Silverado 1500, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2007-2013 GMC Sierra 1500, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2007-2008 Chevrolet Silverado 1500, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2007-2008 GMC Sierra 1500, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2007 Chevrolet Avalanche, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2007 Chevrolet Suburban 1500, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2007 GMC Yukon XL 1500, N\/A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52071755350197,"sku":"BDCN-21577","price":113.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_21577_Fro.jpg?v=1775142012","url":"https:\/\/www.partcatalog.com\/products\/walker-21577-exhaust-muffler","provider":"PartCatalog","version":"1.0","type":"link"}